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Acta Optica Sinica, Volume. 43, Issue 14, 1419001(2023)

Nonlinear Mode Conversion of Special Beams Based on Local Quasi-Phase-Matching

Huan Chen1,2, Gan Wu1,2, Xuhui Sun1,2, Yibing Ma1,2, Yongchuang Chen1,2, Chenglong Wang1,2, Tong Wang1,2, Yizheng Yao1,2, Bing Gao1,2, Hao Wu1,3, Ronger Lu4, Chao Zhang1,2、**, and Yiqiang Qin1,2、*
Author Affiliations
  • 1National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, Jiangsu, China
  • 2College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, Jiangsu, China
  • 3School of Physics, Nanjing University, Nanjing 210093, Jiangsu, China
  • 4Department of Physics, Nanjing Tech University, Nanjing 211816, Jiangsu, China
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    Figures & Tables(5)
    Schematic diagrams of curved domain structures in different isophase planes. (a) k0>0; (b) k0<0

    Fig. 1. Schematic diagrams of curved domain structures in different isophase planes. (a) k0>0; (b) k0<0

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    Beam intensity of fundamental wave and second harmonics in two different modes. (a) LG fundamental wave; (b) HG beam in forward mode; (c) HG beam in reverse mode

    Fig. 2. Beam intensity of fundamental wave and second harmonics in two different modes. (a) LG fundamental wave; (b) HG beam in forward mode; (c) HG beam in reverse mode

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    Intensity curves of fundamental wave and second harmonics in different modes. (a) Fundamental LG beam intensity; (b) second harmonic intensity in the forward mode; (c) second harmonic intensity in the reverse mode; (d) total strength

    Fig. 3. Intensity curves of fundamental wave and second harmonics in different modes. (a) Fundamental LG beam intensity; (b) second harmonic intensity in the forward mode; (c) second harmonic intensity in the reverse mode; (d) total strength

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    Intensity diagrams of HG beam at different propagation lengths in reverse mode. (a) -d-d; (b) -3d-3d

    Fig. 4. Intensity diagrams of HG beam at different propagation lengths in reverse mode. (a) -d-d; (b) -3d-3d

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    Simulation of the LG beam with p=0,l=1,2,3 and the converted HG beam. (a) (b) (c) Phase diagrams of LG beam with different l quantum numbers; (d) (e) (f) intensity diagrams of LG beam with different l quantum numbers; (g) (h) (i) the intensity diagrams of HG beam obtained by conversion

    Fig. 5. Simulation of the LG beam with p=0,l=1,2,3 and the converted HG beam. (a) (b) (c) Phase diagrams of LG beam with different l quantum numbers; (d) (e) (f) intensity diagrams of LG beam with different l quantum numbers; (g) (h) (i) the intensity diagrams of HG beam obtained by conversion

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    Huan Chen, Gan Wu, Xuhui Sun, Yibing Ma, Yongchuang Chen, Chenglong Wang, Tong Wang, Yizheng Yao, Bing Gao, Hao Wu, Ronger Lu, Chao Zhang, Yiqiang Qin. Nonlinear Mode Conversion of Special Beams Based on Local Quasi-Phase-Matching[J]. Acta Optica Sinica, 2023, 43(14): 1419001

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    Paper Information

    Category: Nonlinear Optics

    Received: Feb. 15, 2023

    Accepted: Apr. 3, 2023

    Published Online: Jul. 13, 2023

    The Author Email: Chao Zhang (zhch@nju.edu.cn), Yiqiang Qin (yqqin@nju.edu.cn)

    DOI:10.3788/AOS230558

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology